President Barack Obama is in Dallas to speak at an interfaith memorial service for five police officers killed on Thursday.Tap here to watch live coverage from ABC NewsFormer President George W. Bush is also scheduled to speak, along with Dallas Police Chief David Brown.While the president was aboard Air Force One headed to Dallas, he placed telephone calls to the family members of Alton Sterling and Philando Castile, two black men killed in separate police shootings last week that sparked protests around the country.Tap here for more on the story40472484

DALLAS —

President Barack Obama is in Dallas to speak at an interfaith memorial service for five police officers killed on Thursday.

Former President George W. Bush is also scheduled to speak, along with Dallas Police Chief David Brown.

While the president was aboard Air Force One headed to Dallas, he placed telephone calls to the family members of Alton Sterling and Philando Castile, two black men killed in separate police shootings last week that sparked protests around the country.